Apparatus for withdrawing aerated vapor and condensate from steam-condensers.



n. B. mamon I APPARTUS FOR WITHDRAWING ERATD VAPOR AND CUNDNSAT'E FRG#S'EM GUNDENSERS. I

APPLICATION NLE) UG.3i. 9l4. A

Ll @$43. VEmma Nov. 16, mais.

. s A 4 sHEETls-SHEET 1.

D. B. MURISUN. APPARATUS FOR WITHDRAWING AERATED VAPOR AND CONDENSATEFROM SIEAM CONDENSERS. APPLICATION FILED AUG,3I. I9I4.

L 60,943, n' Patented Nownfl, I9I5.

4 SHEETS-SHEET 2.

n. B. Mawson, APPARATUS FUR WITHDHAWING AFRAED MPOR AND CONDENSATE FROMSTEAM CONDENSERS.

APPLICATSON FiLED AUG.3I 1914.4 Ll, @www Nov. m, 1915.

' 4 SHZiS-SHEET 3.

' bf. MOmsoN; APPARATUS FOR W'ITHDHAWI-HG- AERATED VAPOR AND CONDENSATEFROM STEAM CONOENSEHS.

APPLICATION FILED AUG-3l19l4.'

Patented Nov. 16, 1915.

UNITED STATES vPATENT OFFICE.

DONALD Banus Monson, or HARTLEPOOL, ENGLAND.

APPARATUS FOR WITHDRAWING AERATED 'VAPOR AND CONDENSATE EROI! STEAM-CONDENSERS.

Patented NOV. 16, 1915,

Application led August 31, 1914. Serial No. 859,481.

To all whom it m ay/ conce/ML Be it known that I, DONALD BARNS MORI-sox, a subject of the Kinor of Great Britain and Ireland, residing atiartlepool, in the vcounty of Durham, England, have invented A anauxiliary surface condenser in which the steam is condensed by coolingWater that is not suitable for use in the boilers andfrom which the airis discharged by an air pump, the heat in the steam from the steam jetis lost.

This invention relates to improvements in steam condensing apparatusWorking under vacuum wherein aerated vapor is Withdrawnl from a maincondenser by a steam jet and is discharged into a receiver in which thesteam from the steam jet is condensed by 'y water such as boilerfeedivater.

The object of the invention is t0 Provide improvements in apparatus ofthe kind referred to in order to obtain effects by temperature. wherebythe size of the pump or pumps and the necessary driving power can bereduced, the arrangement being such that the heat in the steam from thesteam jet and in the vapor from the condenser is usefully absorbed byboiler feed Water; and whereby the air pump is enabled to deal with alarge range of air in the vacuum system, thereby promoting reliabilityunder varying conditionsof Working.

According to the invention a regulated quantity of boiler feed Waterwhich is only sufficient to usefullyabsorb the heat from the steam jet,is admitted to a receiver in which it condenses steam from the steamljet and in which' the vapor temperature is maintained higher than thevapor temperature in the condenser `whereby the quantity of waterrequired for the condensation of the steam in the receiver is reducedand thereforethe pumping power required to discharge/such water totheatmosphere is' also Y reduced. The heated Water and aerated vaeitherside of the piston or pistons, or delivered into one or more barrels onone side of the piston or pistons, in each casejvvith" or withoutcondensate from thev condenser, which may be delivered to the pump orpumps direct or through a Water seal. When the heated Water is Withdrawnfrom the receiver separately at a higher temperature than the aeratedvapor, the air pres'- sure or air density of the aerated vapor may beincreased by the condensation bf the vapor by another portion of theboiler feed wateryof a temperature lower than that discharged from vthereceiver, thus decreasing the volume ofwa given Weight of air andreducing the size of the air pump and the power necessary to dischargethe air' to the atmosphere.

' The improve'd technical effect of apparatus according to the presentinvention-is obtainable both withsurface condensers and jet condensers.For example, the quantity .of steam used in a steam )et to provide forthe removal of a large Weight of air may be sufficient to raise thetemperature of the whole condensate from the main condenser ten degreesFahrenheit; consequently, the same quantityv of steam would raise onethird of the condensate, or one third of the total quantityvof the feedWater required lfor theboilers, 30 Fahrenheit. Suppose in a surfacecondenser the vacuum is 96 per cent. and the vapor temperature is 85Fahrenheit and that the condensate is Withdrawn from, the condenser atFahrenheitv by a separate pump. If one third of the total quantity ofthe condensate at '75O Fahrenheit is led into the steam jet receiver, itWillleave the receiver at about 105 Fahrenheit and the temperature ofthe vapor in they receiver will be maintained at about 110 'Fahrenheit.If the aerated vapor fromthe receiver is brought into direct contactwith the condensate at 75D Fahrenheit, the volume of a given weight ofsaturated air can .be reduced from 900 cubic feet per lbfto 2Q() cubicfeet per 1b. whereby .it caribe dis charged by an air pump of reducedsize and requiring less power, and .Wherebyvery high thermal etiiciencyvcan be obtained. The Same result obtains With a jet condenser carryinga vacuum of say 96 per cent. and a ycorresponding vapor temperaturey ofFahrenheit, when the mixture of cooling water and condensate withdrawnfrom the condenser, which is about 75 Fahrenheit, 1s suitable for use asboiler feed water, ror when the boiler feed Water is supplied fromanother source.

`For steam turbine condensing plant working under very high vacuum, twovpumps may be employed, one pump .drawing condensate from' the condenser1n the ordinary way and the other pump drawing aerated vapor from thereceiver, the heated water from the receiver being admitted to either orboth of the pump barrels between '4 the pistonand the dischargevalves,-so that it is without prejudicial effect on the air vwithdrawingcapacity of the air ypump or pumps. By this particular arrangement thewater seal which is usually employed 1n apparatus of this kind betweenthe condenser and the pump, may be dispensed with. Therefore -thisarrangement may be of great practical advantage on shipboard where thespaceavailable'for a Water seal below thev condenser does not usuallyexceed three or four feety and thereby limits the pressure at which theair pump may withdraw and therefore the amount of air it c an deal with.

The accompanying drawings Figures l to 8, illustrate various forms ofapparatus according to my invention, the same letters'of reference beingused to denote the similar parts in the several figures.

Aerated `vapor is withdrawn from thecondenser c by a steam jet device sdischarging into the receiver 1- wherein the steam from the jet` iscondensed by water such as boiler feed water admitted through the pipet.

In Figs. 2, 3,4, 5, .and 7, av regulatedv quantity of boilerv feed]water, which is only suficient to usefully absorb the heat from thesteam jet, is admitted through the valve g into the receiver. r in whichit condenses the steam from the steam jet device s, and in which,receiver the vapor temperature 1s the boiler feed water'adrnittedthroughy the valve 71 andofa temperaturelower than that discharged ,fromthe receiver .r through the p lpe e, and. therefore the-temperature'of-the air delivered-to the'pump is rendered lower than the temperatureof the heated water Withdrawn from the receiver 1' through the pipe e,thus decreasing the volume of a givenweight of air and reducing the sizeof the air pump and the power necessary to drive the pump. p

In Fig. .1, the heated water is delivered from the receiver r throughthe pipe'e to-` gether with the aerated vapor into that end ofthe barrelof the reciprocating pump b which is situated between the piston and thehead valves, and the condensate from the condenser c is deliveredthrough the pipe du to that end of the barrel of the pump b which issituated below usual manner.

In, Fig. 2, the condensate is withdrawn' from thesurface 4'condenser cthrough the pipe d by the pump b and a portion of the /condensatedischarged from the pump is delivered from the well w'through the pipe tto the receiver r and to the pipe ,f for the purpose herenbeforedescribed. The aerated the piston, in the"` vapor is withdrawn. from thereceiver 1' through`the pipe f by the pump a and enters" the end of thebarrel below the piston,

while the heated lwateris withdrawn from the receiver r through pipe cby the same pump aand enters .the end of the barrel above the piston,thereby tending to balance" the water load on both pumps a and Z).

Fig. 3 shows an arrangement by which the pump a withdraws aerated. vaporalone y from the receiver r through the pipe f, the

whole of the heated water from/the receiver,` f

7' being admitted through pipe e to that end of the barrel of the pump bwhichis above.

the piston, wherein it mixes with the condensate Withdrawn from thecondenser through the pipe In this vexample both pumps are ofthevalveless piston type.

Fig. 4 is a'modification of Fig. 2, wherein the pump a. which withdrawsthe aerated vapor and heated water from the receiver r, I

discharges through the pipe c' into that end of the barrel of the pump bwhich is between the piston and the discharge valves.

In the arrangements described, the withv drawal of aerated vapor vandheated water from the receiver 1' in no way interferes with i with theremoval yof condensate from-.the

condenser c thro-"ugh the pipe d, therefore the arrangements arevery'advantageous in practice as they'obviate the limitations resultingfrom the use of a water sealbetween .thepump b land condenser. c. f

In Fig. 5, aerated vapor and heated water l are simultaneously withdrawnfrom ceiver 'l' by the pumpsictv and b, the being connected to thoseends of both which are abovel thepistons, and the the re-l pipe le pumpsthel ends which'a're' below' the pistons. In ,order to prevent! theflowof aerated vapor from the pipe f1 into the ndenser c which isunder alower pressurethan the receiver 7*, a water seal j isprovided, thecondensate vfrom the condenser' Pipes f" and f1 from the receiver vbeingconnected to into'the 'pipe d" and thence.v

passing through the seal y' and into the pump o together with aeratedvapor from the pipe fl `e'hich is thereby condensed and cooled hycontact with the condensate. if desired, the pump a may he cooled in aknown manner by water in continuous circulation through a water coolerc, in which case the supply ot' water through the valve may he cut od oromitted. Also, both pumps a and b may he suitably connected 'together'as for example by a valve o so that in the event of either pump`oecoming deranged, the other pump can withdraw the' aei' .ed vapor andheated water romthe receiver r together with the condensate from thecondenser c, or by opening the valves o and c both pumps may oe employedfor withdrawing the acrated vapor and condensate from the condenser cwithout using the steam jet device a and the receiver r.

n Fig. 6, the pump b withdraws heated water, with, it may, be, someaer'ated vapor from the receiver r through the pipe e, and thecondensate from the condenser 'through the pipe d. Aerated vapor is alsoWithdrawn the receiver r by the dry air pump a, thewater being admittedto the receiver fr 'through the valve g consisting of condensatesupplied from the well 'w into which the pump b discharges.

In Fi g. 7 which is a modication ot' ig. A6, a second receiver k formingthe air suction stem is provided. The heated Water from :used vapor:from the receiver ,7c are led into that end of the barrel of the pump owhich above the piston, the air being through the pipe ,t hy the dry an',a g, is a modification of Fig. and in which only one pump o isprovided. in this' example the end of the barrel of the pump b which isshove the piston receives the aerated vapor through the pipe Airom thereceiver r, and theend which is below the piston receives heated waterfrom the receiver r through the pipe c. f

What l claim and desire to secure by Letters Patent is i l. Apparatusfor withdrawing aerated vapor and condensate from steam condensers,comprising a steam jetdevice in communication with a condenser,areceiver, and a reciprocating pump, a passage leading from the steamiet to the receiver, a' passage leading from a water supply to thereceiver, a passagey leading from the ,receiver to the pump, and apassage leading from the condenser to said pump, substantially as andfor the purpose herein set forth.

2. .apparatus for withdrawing aerated vacondensate from steamcondensers,

n -i device in communir, a receiver, and a receiver fr together with thewaterandr common pipe e from which the water,`

reciprocating pump, a passage leading from the steam jet to thereceiver, a passage leading from a water supply tothe receiver, apassage'leading from the receiver to one end of said pump and a passageleading from the condenser' to the other end of said pump, substantiallyas and for the purpose herein set forth.

3. Apparatus for withdrawing aerated vapor and condensate from steamcondensers, comprising a steam jet device in communication with acondenser, a receiver, and a reciprocating pump, a passage leading fromthe steam jet to the receiver, a passage for conveying to the receiverwater discharged from said pump, a passage leading from the receiver tothe pump, and a passage leading from the condenser to said pump,substantially asand for the purpose herein set forth.

d'. Apparatus for withdrawing aerated vapor and condensate from steamcondenser-s, comprising a steam jetdevice in communication with acondenser, areceiver, and a reciprocating pump, a passage leading fromthe Vsteam jet to the receiver, a passage for conveyin to the receiverwater discharged from sai pump, a passage leading from the vreceiver tosaid pump, a passage leading .from the condenser to said pump, and awat-er seal. in the last mentioned passage, substantially as and for thepurpose herein set forth.

5. Apparatus for withdrawing aerated vapor and condensate from steamcondensers,

comprising a steam jet device in communication with a condenser, areceiver, a reciprocating pumpa passage for conveying to the receiverwater discharged from said pump, a second pump, a passage leadmg fromthe steam jet to the receiver, a passage leading from the receiver tothe second pump, -a passage dleading from the receiver to the firstmentioned pump, and a passage leading from the condenser to saidlatter.v pump, substantially as and for the purpose herein set forth.

6. Apparatus for withdrawing aerated vapor and condensate from steamcondensers, comprising a steam jet device in communication with aicondenser, a receiver, two reciprocating pumps, a passage leading fromthe steam ]et to the receiver, passages leadingfrom the receiver to bothpumps, a passage leading rom the condenser toene of Athe pumps, and apassage for conveying to the receiver Water discharged from' said lastkmentioned pump, substantially as and for the purpose set forth.

` 7. Apparatus for withdrawing aerated vapor and. condensate from steam-condensers,

comprising la steam jet device in communi-- cationwiti a condensera areceiver, two reciprocating pumps, a passage leading from the steam jetto the-receiver, a passage leading from a water supply to the receiver,sepn tially crate passages leading from the receiver to each pump, meansfor supplying cooled Water to one pump, and a passage leading fronstl'iecondenser to the other pump, substantially and for the purpose hereinser forth.

8. Apparatus for withdrawing uci-ated vapor and condensate from steamcondenscomprising a je device in communication with a condenser, areceiver, two reciprocating pumps, a passage leading from the steam jetto the receiver, separate passages ieading from the receiver/to euchpump, means for supplying cooled Water to one pump, a passage leadingfrom the condense to the other pump, and a passage for conveying to thereceiver water discharged from said last mentio'ncd pump, substanas andfor ther purpose herein set forth. f v

9. Apparatus for withdrawing aerated vapor and condensate from steamcondensers, comprising a steam jet device in communication with acondenser, a receiver, tivo reciprocating pumps, e passage leading fromthe steam jet to the receiier, a passage lead,- ing from a Water supplyto the receiver,A separate passages ieading from the receiver to onepump, means for supplying cooled Water to said last mentioned pump, andpassage leading from the condenser to the, other pump, substantially andfor the purpose herein set forth. y

l0. Apparatus for withdrawing aerated vapor and condensate frome steamcondenser, comprising asteam jet device in communication with acondenser, a receiver; two reciprocating pumps, a passage leading fromthe steam jet 'to the receiver, a passage leading from the receiverV toone end of a pump, a passage leading from the lower, por-r tion of thereceiver to one end of a. pump, a passage leading from the condenser' toone pump, and a passage for conveying to the receiver Water dischargedfrom said last mentioned pump, substantially as and for the purposeherein set forth.

l1'. Apparatus for withdrawing. aerated vapor and'condensate `from asteamcoudenser, comprising 'a steam jet device in communication with acondenser, a receiver, two reciprocating pumps, a passage leading fromthe steam jet to the receiver, a passage leading fromthe lowerv portionof the re `ceivcr to one end of a, pump, a passage .leadi ing from 4thecondenser to an end of one pump, a passage ieading from the receiver toan end of vthe other pump, and a passage for conveying to the lastmentioned passage and tothe receiver' water discharged from the pumpconnected to the condenser, for the purpose herein set forth.

12. Apparatus for withdrawing aerated vapor and condensate from a steamcondenser, comprisingl a steau. jet devi'li-.e in communication with acondenser, a receiver, e

' end of the pump,

reciprocating pump, a passage leading 'from the steam jet to thereceiver, a passage lead-v ing from the iowerporticm of the receiver toone -end of the from the condenser to one end-of the pump, a passageleading from the receiver to one ing to the last mentioned passage andto the receiver Water discharged rfrom the pump connected 'io' thecondenser,for the purpose herein set forth. 'n v i3. Apparatus forwithdrawing aerated vapor and condensate from steanrcondens ers,comprising asteani i tion with a condensena receiver, two recip rocatingpumps, a passage. leading from the steam jet to ceiver to one end ofeach pump, a passage leading from the condenserte an end of one pum'p, apassage leading' from the .receiver to an end of the other pump, and apassage for conveying to the last mentioned passage and to the receiverWater discharged from the pump connected to the cond ir, for the purposeherein set forth.

le. Apparatus for rWithdrawing aerated vapor and condensate from steamcondens` ers, comprising a steam jet communicating with condenser,areceiver, tivo'reciprocating pumps., a. pipe leading from'the steam jetto the receiver, a pipe leading' from the hott-om of the receiver to oneend of each pump. a pipe leading from the condenser to the other end ofone of the pumps, a pipe leading from the receiver to the remainingpumpend, a well into which discharges the outlet o't the pump connected tothe con@ denser, and apipe for conveying Water .from the well to thelast .mentioned pipe and, to the receiver, for the purpose set fori-h.

l5. ppuraus 'for Withdrznving aerated vapor and condensate from steamcondeirers, comprising a steam jet communicating with acondenser, areceiver, two vertical rcciprocating pumps, a pipe leading from thesteam jet. to the ref :eive-r, a. pipe 4ieading' from 'the bottoni ofthe receiver to the uppermost ends of each pump, a pipe leading fromlfhe condenser to one o he loe'ermost pump ends, a pipe ieadin from thereceiver to the remaining pump end, a Well into which discharges theoutlet of the pump con nected to the condenser, and e pipe'for con-'-veying water from the weii to the last mentioned pipo and. to therece'iif'er, for the pur pose herein set forth.

16. Apparatus for withdrawing aerated vapor and condensate from sceau;condensers, comprising a steam jet communicating with a condenser, areceiver, two vertice? ciprocating pumps,l a pipe leading from the steamjet to the receiver, a pipe leading from the bottom of the receiver tothe uppermost ends of each pump, a pipe ieading from the pu mp, a passaleading' and a passage 'for,rioni-@5.xA

jet in cmimumica-4 the receiver, a passage leading from the lowerportion of the from the receiver to the lowermost pump,

. ends, a well intov which discharges the outlet or' the pump connectedto the condenser, and a pipe for conveying water fromv the wellito oneof the last mentioned pipes and to the receiver, for the purpose hereinset comprising a steam jet two pumps,

forth.

17. vapor and condensate from steam condensers, comprising a steam jetcommunicating with a condenser, a receiver, two vertical reciprocatingpumps, a pipe leading-from the steam jet to the receiver, a pipe leadingfrom the bottom ofthe receiver to the uppermost ends of each pump, apipe leading from the condenser to one of the lowermost pump ends, awater seal in said pipe, a pipe leading from the receiver to theremaining pump end, a passage between the'lowermost ends of the a wellinto which discharges the outlet of the pump connected to the condenser,and -a pipe for conveying water from the well to the last mentioned pipeand' to .the receiver, for the purpose herein set' forth.

"18. Apparatus for withdrawing aerated vapor and condensate from steamcondensers, comprising a steam jet communicating with a condenser, areceiver, two vertical reciprocating pumps, v.jet to the receiver, apipe leading from the bottom of the receiver to the uppermost ends ofeach pump, a pipe .leading from the condenser to one of the lowermostpump ends, a water seal in said pipe, a pipe leading from the receiverto the remaining` ump end, a passage between the lowermost ends of thetwo punips, a control valve in said passage, a well into whichdischarges the outlet of the pump connected to the condenser, and a pipefor conveying water from the Well to the last mentioned pipe and to thereceiver, for the purpose herein set forth.

19. Apparatus for withdrawing aerated vapor and condensate from steamcondensers, communicating with a condenser, a receiver, two verticalreciprocating pumps, a pipe leading from the steam jet to the receiver,a. pipe leading from the bottom of the receiver tothe uppermost endsv ofeach pump, a pipe leading from the condenser to one of the lowermostpump ends, a water seal in said pipe, a b v-pass control valve for saidseal, a pipe leading from the receiver to the remaining pump end, apassage between the lowermqst chambers of the two umps, a control valvein said passage, a wel in the'discharge outletof the pump vwith whichthe condenser is connected, and a pipe for conveying water from the weilto the last'.n ientioned pipe andtc the receiver, for the purpose hereinset forth.

20. Apparatus for withdrawing aerated l 3 .1. i 1 I5 vapor andcondensate iron! steam condensate,

Apparatiis .for withdrawing aerated a pipe leading from the steamcomprising a steam jet, a receiver, and a reciprocating pump so arrangedthat the two ends of its barrel on either side of the piston can be usedfor the drawing in and subsequent discharge of not less than two of thefollowing iuids namely the condensate from the condenser and the aeratedvapor and water from the receiver, one of thef-e three fluids beingdrawn into one end of. ne pump, and one or both of the others into theother end, the whole substantially as described.

21. Apparatus for withdrawing aerated 'vapor and condensate from steamcondensers,

comprising a steam jet, a receiver, a reciprocating pump, two separatepassages for the withdrawal of the aerated vvapor and water from thereceiver respectively7 into the two ends of the pump barrel one passageon either sidel of the piston, a passage for the withdrawal ofcondensate from the condenser into one of said ends, and a water seal inthe passage communicating between the pump andthe condenser, the wholesubstan tially as described.

22. Apparatus for withdrawing aerated vapor and condensate from steamcondensers, comprising a steam jet, a receiver, a reciprocating pump,another pump, a passage for the withdrawal of the condensate from thecondenser into one end of the barrel of the reciprocating pump, apassage for the withdrawal of the aerated vapor from the receiver intothe other pump and a separate passage for the withdrawal of water fromthe receiver into an end of one of the pump barrels other than the endsAinto which the condensate and aerated vapor are drawn, the wholesubstantially as described'.

23. Apparatus for withdrawing aerated vapor and condensate from steamcondensers, comprising a steam jet, a receiver,.two reciprocating pumps,a passage for the withdrawal of the condensate from the condenser intoone end of the barrel of one pump, a passage for the Withdrawal of theaerated vapor from the receiver into an end of the barrel of the secondpump,'and a separate passage for the withdrawal of the water from thereceiver into the remaining ends o both of the pumps, the wholesubstantially as described.

24. Apparatus for withdrawing aerated 3 moms which enters said receiverfrom the steam of Durham, Englandithis eighteenth dey of jet, and apassage for the introduction of August 1914.

another portion of the condensate into the Y passage conveying theaerated vapor to the DONALD BARNS MORISON' second pump, the Wholesubstantially as de- Witnesses: y Y

scribed. JAMES GUNN,

Signed at WestJ Hartlepool, in the county VVILLXAM ROBERTSON LAING.

